You mean ECS▸ from Reading to Salisbury via Southampton? If so, why?!!
I think it’s theoretically for route knowledge training for diversions, there aren’t any normal public
DMU▸ services on the stretch from Basingstoke to Eastleigh, since the last few peak extras were converted to 450 operation a couple of years ago.
Paul
That makes sense. It's also been stated as the reason
SWR» run trains via Westbury from Salisbury to Yeovil, and why
GWR▸ run a daily service fro Southampton to Portsmouth via Eastleigh.